AST_IO_MM_OFFSET
if (len < AST_IO_MM_OFFSET)
if ((len - AST_IO_MM_OFFSET) < AST_IO_MM_LENGTH)
ioregs = regs + AST_IO_MM_OFFSET;
if (len < AST_IO_MM_OFFSET)
if ((len - AST_IO_MM_OFFSET) < AST_IO_MM_LENGTH)
ioregs = regs + AST_IO_MM_OFFSET;